WILL MARK BRAINLIEST
How many moles of helium atoms are there in 4.0 x 1024 helium atoms?

There are 6, 64 moles of helium atoms.

Explanation:

We use Avogadro's number, according to which in 1 mole of any substance there are 6,023 x 10 e23 particles (example: atoms, molecules). We calculate the number of moles according to the following simple three rule:

6,023 x 10 e23 atoms1 mol Helium

4.0 x 10e 24 atomsx=

x= (4.0 x 10e 24 atomsx1 mol Helium)/6,023 x 10 e23 atoms=

x=6, 64 moles of Helium

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates